Why Tokyo advertised rents are rising faster than CPI rental inflation
Tokyo’s advertised rents rose by nearly 20% between January 2016 and April 2025, while the Consumer Price Index (CPI) for private rents increased by approximately 2% over the same period, according to Japan’s Cabinet Office.
The gap does not represent discounts negotiated by tenants. It reflects a rental market in which asking prices facing people searching for homes have risen much faster than rents paid by established tenants.
Why Tokyo’s rental indices tell different stories
The two indices measure different aspects of the rental market.
The Cabinet Office’s advertised-rent index tracks asking rents for available properties using listings from property portal SUUMO. It adjusts for differences in property characteristics, including age, size and location, to measure price changes without confusing them with changes in the types of homes advertised.
The CPI private-rent component, compiled by Japan’s Statistics Bureau, measures rents paid across occupied rental housing, including properties covered by agreements established years earlier.
This distinction is significant because existing rental agreements can continue for extended periods without corresponding increases in monthly payments, even as landlords raise asking rents for vacant properties.
Statistical methodology also contributes to the difference. Unlike the Cabinet Office’s advertised-rent index, the CPI private-rent series does not make equivalent adjustments for the effects of property aging.
Photo by Melrose By The Lake on Unsplash with AI editing by Patience Realty.
For established tenants, the distinction can have practical consequences. Someone who signed a lease several years ago may be paying a rent that has changed little, while comparable properties advertised today carry higher asking prices.
Moving can therefore mean replacing an established rental agreement with one priced under different market conditions, creating a financial incentive to remain in an existing home.
What the latest rental figures reveal
Tokyo’s advertised rents continued to rise at a substantial pace during July-September 2026, according to the Cabinet Office’s November 4 report.
The index for Tokyo prefecture increased 7.4% year on year, reaching 130.1 against a first-quarter 2016 baseline of 100. Annual growth eased from 7.6% in April-June, although the latest reading shows that asking-rent inflation remains elevated.
The Cabinet Office noted that the acceleration in advertised rents appeared to be easing overall, while increases remained strong, especially in Tokyo’s 23 wards.
For households entering or moving within Tokyo’s rental market, the findings point to continued pressure on housing costs that may not be fully reflected in official rental inflation.
For property owners, higher advertised rents indicate opportunities to seek increased income when units become available. However, the index measures asking prices, not rents agreed in newly executed contracts. It cannot establish whether properties achieve their advertised rents or whether concessions are negotiated.
The Cabinet Office considers advertised rents a potential leading indicator of rents paid across occupied housing. But increases in asking rents do not automatically translate into equivalent increases for existing tenants.
The divergence highlights why official rental inflation alone cannot describe the costs confronting households searching for accommodation. The CPI remains useful for tracking rents across occupied housing, while advertised-rent data reveal a different set of conditions facing prospective tenants.
Further Reading:
Cabinet Office - Rental Trends in Q3 2026 (Japanese only)
Cabinet Office - Rental Trends in Q2 2026 (Japanese only)
Cabinet Office - 2025 Economic and Fiscal White Paper (Japanese only)
Statistics Bureau of Japan - Consumer Price Index (Japanese only)
